Kaan W Posted April 25, 2012 Share Posted April 25, 2012 Hi all, I need an answer on a decision that ive been stuck on for quite some time now. GTE or GE block for drag racing? Im building a drag motor that will be used on the street occasionally. The new car will have a 6 speed GTE engine in but the block I have at the moment which I plan on using is a GE. I want to build a block up so I can swap it straight in with the minimum of fuss. Shall I use this GE or just use the GTE in the car and have it off the road for a while whilst built? Thanks. Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted April 25, 2012 Share Posted April 25, 2012 Just use the TT block mate. you going 3.4l? Quote Link to comment Share on other sites More sharing options...
Kaan W Posted April 25, 2012 Author Share Posted April 25, 2012 Just use the TT block mate. you going 3.4l? Nope staying 3.0 Quote Link to comment Share on other sites More sharing options...
DARETT Posted April 25, 2012 Share Posted April 25, 2012 Although its a good idea to build a block beforehand, your better off waiting till you have decided on your turbo/head combination as well. The C/R of the block is going to play a big part and if its a full out drag car you can run a much higher C/R. Around 10:1 is possible on the 3.0 with the right head/cam combo. With drag builds it's harder to piece together seperately as all the parts need to compliment each other for it to work efficiently. Re the blocks you can go with either one, both are used widely without issues. However my advise would be to talk to an engine builder and plan it with the whole combination in mind. Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted April 25, 2012 Share Posted April 25, 2012 Although its a good idea to build a block beforehand, your better off waiting till you have decided on your turbo/head combination as well. The C/R of the block is going to play a big part and if its a full out drag car you can run a much higher C/R. Around 10:1 is possible on the 3.0 with the right head/cam combo. With drag builds it's harder to piece together seperately as all the parts need to compliment each other for it to work efficiently. Re the blocks you can go with either one, both are used widely without issues. However my advise would be to talk to an engine builder and plan it with the whole combination in mind. thats a good informed answer by someone thats been there and done it. take this advice Quote Link to comment Share on other sites More sharing options...
Kaan W Posted April 25, 2012 Author Share Posted April 25, 2012 Although its a good idea to build a block beforehand, your better off waiting till you have decided on your turbo/head combination as well. The C/R of the block is going to play a big part and if its a full out drag car you can run a much higher C/R. Around 10:1 is possible on the 3.0 with the right head/cam combo. With drag builds it's harder to piece together seperately as all the parts need to compliment each other for it to work efficiently. Re the blocks you can go with either one, both are used widely without issues. However my advise would be to talk to an engine builder and plan it with the whole combination in mind. Im going to stick to the stock 8.5-1 CR and was going along the lines of a gt47-88 with 1.08 housing twin scroll, also I want to try and stick to shells V-power! I probably will go with a GTE as I want ultimate reliabilty as well as power but if I can get some solid proof that they dont make no difference then I will just use the GE. Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted April 25, 2012 Share Posted April 25, 2012 whaya are you set on the lower compression. higher compression is more responsive and makes more power with less boost. what cams do you plan on using and what are your ultimate power goals? another big question is how dou you want the car to feel? there are a few 8 second drag cars in the us buil on ge blocks. Quote Link to comment Share on other sites More sharing options...
Guigsy Posted April 25, 2012 Share Posted April 25, 2012 ge will be cheeper to replace Quote Link to comment Share on other sites More sharing options...
Josh42 Posted April 25, 2012 Share Posted April 25, 2012 If you decide to use the GE block let me know! I'll buy your GTE=] Quote Link to comment Share on other sites More sharing options...
Kaan W Posted April 25, 2012 Author Share Posted April 25, 2012 whaya are you set on the lower compression. higher compression is more responsive and makes more power with less boost. what cams do you plan on using and what are your ultimate power goals? another big question is how dou you want the car to feel? there are a few 8 second drag cars in the us buil on ge blocks. I was gunno go for 8-1s . Thought this would be best for normal pump fuel with a big ass turbo to avoid detonation. Im not going for mega numbers but wanna be around the 1200 mark. Aggressive 280 cams, can live with lag. Just want something that will piss my mates 9 second chevy Quote Link to comment Share on other sites More sharing options...
Kaan W Posted April 25, 2012 Author Share Posted April 25, 2012 If you decide to use the GE block let me know! I'll buy your GTE=] I bet you will lol. Quote Link to comment Share on other sites More sharing options...
DARETT Posted April 25, 2012 Share Posted April 25, 2012 I was gunno go for 8-1s . Thought this would be best for normal pump fuel with a big ass turbo to avoid detonation. Im not going for mega numbers but wanna be around the 1200 mark. Aggressive 280 cams, can live with lag. Just want something that will piss my mates 9 second chevy 8.1's is fast!! lol Are you looking to stick to a 6 speed and full chassis or go all out with a glide and tube chassis etc? There's no reason why you need to stick to stock compression anymore. A big cam can bleed off cylinder pressures and avoid detonation with a high comp engine as well. Matched with an engine management system like a Syvecs you can still run big power on V Power. This is why planning the combo with your tuner is going to be best. I only say this now as it saves future costs to swap parts out etc... This car below is a full weight and chassis 6 speed car, it runs a 3.4 with 9.775:1 CR, he also has run 8.3's on a 4780! He was going for the 7.9 record by SW later this year with a bigger turbo but ran into a few issues. A higher comp engine with the big cam will give alot more power and in the right powerband. You just need it matched accordingly. The stock 3.0 c/r with the 4788 is very laggy and you'll have issues keeping the boost up between gears. Darin Diachara had the same issues and actually went faster from changing back down to an 80mm..... Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted April 25, 2012 Share Posted April 25, 2012 see i told you , listen to him Quote Link to comment Share on other sites More sharing options...
Kaan W Posted April 25, 2012 Author Share Posted April 25, 2012 Sorry i meant 8-1 CR lol, 8.1 is F-QUICK. I just need the best advice really which is why I joined this forum. Plan on full weight with 6 speed and low 10-9 seconds consistantly on regular pump fuel. At the end of the day I dont know anything I just need the best advice bit by bit Quote Link to comment Share on other sites More sharing options...
DARETT Posted April 25, 2012 Share Posted April 25, 2012 Lol, thanks Craig. I learnt most of this the hard way by spending money and then changing back to what suited my setup more!! kaan2lee there's No reason to go so low on the CR at all. If it's low 10-9 seconds on pump you don't need that big a turbo either. That 4788 is when you want to go 8's I would look at maybe a 9:1 CR matched with a turbo like Jamie P had for sale. His car ran consistant numbers with it on pump fuel and no issues. Quote Link to comment Share on other sites More sharing options...
Kaan W Posted April 25, 2012 Author Share Posted April 25, 2012 I would look at maybe a 9:1 CR matched with a turbo like Jamie P had for sale. His car ran consistant numbers with it on pump fuel and no issues. How do I get that kind of CR? I have 8.5-1 JE pistons already? Quote Link to comment Share on other sites More sharing options...
DARETT Posted April 25, 2012 Share Posted April 25, 2012 You can change the pistons or adjust the headgasket size to increase it. JP had 8.5-1 and then changed the headgasket to bump it up a little. Here's the turbo I was mentioning: http://mkivsupra.net/vbb/showthread.php?267300-Precision-GT42-7675R-CEA-Billet-1200-RWHP-Turbo It's a good price at that, and if you use full drag slicks on that setup you'll see 9's. Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted April 25, 2012 Share Posted April 25, 2012 i have a cros breed engine , i use a ge block with gte pistons and a ge .6 h/g . wich i belive gives around a 9.6 comp ratio. that means at just 15 psi it makes circa 500 bhp the lower boost means less fuel is needed to get the correct 11.5 on boost afr so i can get away with tiny 550cc injectors . and a good payoff if its something you want to use on the road when you are not dragging it is the off bosst engine responce is exelent and throtte is almost n/a sharp Quote Link to comment Share on other sites More sharing options...
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